Steam-trap.



M. J; BOYLE.

swam TRAP. I APPLIUATION I'ILED OUT. 5, 1908.

Patented Oct. 19, 1909.

WITNESSES I UNITED sT s PATENT oEEro MICHAEL JOSEPH BOYLE, OF NEW YORK,N. Y., ASSIGNOR OE ONE-HALF T0 WILLIAM SILLMAN, OE'NEW YORK, NY.

g STEAM-TRAP.

Specification of Letters Patent. Patented Oct. 19, 15%)9.

Application filed. October 5, 1908. Serial No. 456,275.

To all whom it may concern."

Be it known that-I, MICHAEL JosErH LoYnE, a citizen of .the UnitedStates, and a resident of the city of New York, borou h of Brooklyn, inthe county of Kin s aiid State of New York, have invented a new andImproved Steam-Trap, of which the following s a full, clear, and exactdescription.

The object of the invention is to provide a new and 1mproved steam trap,which is simple and durable in construction, and very effective andautomatic in operation, to periodically discharge the water ofcondensation.

The invention consists of novel features and parts and combinations ofthe same which will be more fully described hereinafter and then pointedout in the claims.

A practical embodiment of the invention s represented in theaccompanying drawings forming a part of this specification, in

which similar characters of reference indicate corresponding parts inboth views. v Figure l is a sectional side elevationof the improvement;and Fig. 2 is a transverse section on the line 22 of Fig. 1, parts ofthe improvement being broken away."

The closed vessel A is provided at its top with a stutling box B,through which extends the steam supply pipe C, screwed or otherwisesecured to the top plate D of a stand D employed for supporting theapparatus. The steam supply pipe C is provided with a head C connectedby a pipe 0 with the apparatus on which the steam trap is to be used, sothat the water of con densation accumulates in the vessel A.

The vessel A has an up and down slidlng movement on the steam supplypipe, C, and the sides of the vessel A are preferably provided withguide rollers E engaging vertical guides D arranged on the stand D, toguide the vessel A in its up and down movement.

Through the steam supply pipe C extends the water discharge pipeF,reach1ng to within a short distance of the bottom of the vessel A atthe time the latter is in its uppermost position, as indicated in Fig.1, and the upper end of the water discharge plpe F 1s secured in anelbow F attached to or forming an integral part of the head C, asmdicated in Fig. 1. From the elbow F leads a pipe F 2 to a suitableplace of discharge, and in the pipe F is arranged a valve G on the valvestem G.

adapted to be opened by the action of a spring G on the valve stem G.The valve is normally heldclosed against the tension of the spring l byone end of a lever H engaging the outer end of the stem G, and thesaidlever H is fulcrumed on a bracket I attached to the pipe F and the otherend of the lever H rests on a cross bar B connecting the extension boltsB of the stuffing box B with each other. Thus when the vessel A movesdownward, the cross bar B moves away from the lever H, to allow thespring G to move the valve G into an open position, and when the vesselA moves upward the cross bar B imparts a return swinging motion to thelever H, so that the latter presses the stem G downward, thus closingthe valve G.

The cross bar B is pivotally connected by a link J with acounterbalancing lever K, carrying an adjustable weight K and fulcrumedat K on a bracket D held on the stand D. The weight K is adjusted on thelever K so as to hold the vessel A, when empty, in an uppermostposition, so that the valve G is kept closed by the action of the crossbar B on the lever H pressing Now when the accumulated water ofcondensation in the vessel A overbalances the lever K, then the vessel Amoves downward, and in doing so the valve G is opened, as abovedescribed. When this takes place the pressure of the steam in the upperend of the vessel A forces the water of condensation up through the pipeF into the elbow F and by way of the pipe F to a suitable place ofdischarge, and when the vessel is relieved of nearly all of the water ofcondensation, then the lever K overbalances the vessel A, so that thelatter is caused to move up to its normal position,

whereby the valve G is again closed. The above-described operation isthen repeated, that is, when the weight of the water overbalances thelever K then the vessel A moves downward to open the valve G, as abovedescribed. A small amount of water is left in the vessel A, to keep thelower end of the pipe F sealed, with a view to prevent the escape ofsteam at the time the vessel A is emptied of the water of condensation.

From the foregoing it will be seen that the steam trap shown anddescribed is very simple and durable in construction, is not liableeasily to get out of order, and is arranged to periodically dischargethe water of condensation as required.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A steam trap comprising a closed vessel, a counterbalancing lever onwhich the said vessel is hung, a fixed steam supply pipe extendingthrough the top of the vessel on which said vessel is mounted to slideup and down, the said pipe opening into the said vessel at the upper endthereof, a fixed water discharge pipe extending downward through thesaid steam supply pipe and opening into the said vessel at the lower endthereof, a valve in the said water discharge pipe, a spring for openingsaid valve when the vessel moves downward, and a lever for controllingsaid valve, the said lever being actuated to hold the valve closedagainst the tension of its spring when the vessel moves upward.

2. A steam trap comprising a closed vessel, a weighted lever, meansincluding a cross piece carried by the vessel for suspending the vesselfrom said weighted lever, a fixed steam supply pipe, opening into thesaid vessel at the upper end thereof, on which the said. vessel ismounted to slide up and down, a water discharge pipe extending throughthe said steam supply pipe and into the said vessel to within a shortdistance of the bottom thereof, a valve in the said water dischargepipe, and a lever having one end extending above the said opening intothe said vessel at the lower end thereof, a spring-pressed valve on thesaid discharge pipe, and a lever connected with the said cross piece andengaging the stem of the said valve to hold the same normally closedagainst the tension of the valve sprin 4. A steam trap comprising aclosed vessel, a counterbalancing lever, a steam pipe opening into thevessel at the upper end thereof, a water discharge pipe extending intothe said vessel and opening near the bottom thereof, a valve in the saidwater discharge pipe, a spring for opening said valve, lever forcontrolling said valve, a support extending above the vessel and carriedthereby, and a connection between said support and the counterbalancinglever, the said valve controlling lever resting on said support andbeing actuated by the up and down movement of the vessel.

5. A steam trap, con'iprising a closed vessel provided at its top with astufiing box. a counterbalancing lever on which the said vessel is hung,a steam pipe extending through the stufiing box and opening into thevessel at the upper end thereof, the said vessel having an up and downsliding movement on said pipe, a head on said steam pipe provided withan elbow at its top, a steam supply pipe connected with said head belowthe elbow, a fixed water pipe extending downward through the steam pipeinto the vessel and reaching within a short distance of the bottom ofthe vessel when the latter is in its uppermost position, the said waterpipe being secured at its upper end in said elbow, a discharge pipeleading from the elbow, and a valve in said discharge pipe, controlledby the up and down movement of the said vessel.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MICHAEL JOSEPH BOYLE.

Vitnesses THEO. G. Hos'rnn, JOHN P. DAVIS.

